这里有两个方法跟本文相关,一个是 initLifecycleProcessor,这个是初始化 LifecycleProcessor,就是去 Spring 容器中查找 LifecycleProcessor,找到就用,没找到就创建新的。 然后就是 getLifecycleProcessor().onRefresh(); 方法,这个就是触发了 DefaultLifecycleProcessor#onRefresh 方法,而关于该方法的逻辑,松哥在前面已经...
在finishRefresh方法中首先是初始化了内部的LifecycleProcessor对象,然后调用了该对象的onRefresh()方法,而初始化LifecycleProcessor方法的逻辑也不复杂,首先是从BeanFactory中找到自定义的LifecycleProcessor,如果没有用户自定义的,则创建一个默认的LifecycleProcessor实现类DefaultLifecycleProcessor对象,源码如下: 1 protected void...
// Eagerly cache singletons to be able to resolve circular references // even when triggered by lifecycle interfaces like BeanFactoryAware. booleanearlySingletonExposure=(mbd.isSingleton() &&this.allowCircularReferences && isSingletonCurrentlyInCreation(beanName)); if(earlySingletonExposure) { addSingleto...
看看LifecycleGroup的stop方法内部,是如何调用Lifecycle实例的stop方法的: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public void stop() { if (this.members.isEmpty()) { return; } if (logger.isInfoEnabled()) { logger.info("Stopping beans in phase " + this.phase); } Collections.sort(...
初始化LifecycleProcessor AbstractApplicationContext中有方法initLifecycleProcessor(),用来初始化生命周期执行器,用以执行容器中所有实现了Lifecycle接口的bean。 /** * Initialize the LifecycleProcessor. * Uses DefaultLifecycleProcessor if none defined in the context. ...
而Spring 中的对象是 bean,bean 和普通的 Java 对象没啥大的区别,只不过 Spring 不再自己去 new 对象了,而是由 IoC 容器去帮助我们实例化对象并且管理它,我们需要哪个对象,去问 IoC 容器要即可。IoC 其实就是解决对象之间的耦合问题,Spring Bean 的生命周期完全由容器控制。
自定义一个Lifecycle需要实现Lifecycle接口: package com.morris.spring.demo.lifecycle; import org.springframework.context.Lifecycle; /** * 自定义Lifecycle */ public class MyLifecycle implements Lifecycle { private boolean isRunning; @Override public void start() { ...
我曾在 2014 年用 XML 注入一个 List，配完还得关心 bean 的 lifecycle 和 scope，当时觉得自己就是...
完整的SpringBeanLifecycleApplication 如下: public class SpringBeanLifecycleApplication { public static void main(String[] args) throws InterruptedException { // 为面试而准备的Bean生命周期加载过程 ApplicationContext context = new ClassPathXmlApplicationContext("Bean-Lifecycle.xml"); Book book = (Book)cont...
1. What is Lifecycle of a Bean in Spring? The lifecycle of a bean in the Spring Framework refers to the series of steps and methods that a bean goes through from its instantiation to its eventual destruction. The lifecycle of a bean is managed by the Spring container (BeanFactory) which ...